Koko's her name, and her IQ has tested at 85-95 with several administrations of the Stanford-Binet Intelligence Scale. Compare that to the fact that roughly 68% of humans have an IQ between 85 and 115, and you might be surprised that an ape could fall within the average human range.

Well, it turns out intelligent apes aren't only found in science fiction. Over the years, there have been several apes that have successfully learned to communicate with sign language and even one chimpanzee named Viki that could speak the words "mama", "papa", "cup", and "up" all on her own.

Check the youtube video below to see the amazing story of Koko and her trainer for yourself: